CVE-2026-50738

A use-after-free condition exists in pglogical's worker signaling code, where a worker structure can be dereferenced after the underlying slot has been freed or recycled during normal worker lifecycle events. The condition is reachable during normal replication operation, including by a low-privileged user able to influence worker start, stop, and restart timing through permitted pglogical operations. In the typical case the condition crashes replication workers, causing an availability impact. In the worst case a use-after-free in a PostgreSQL backend can be leveraged as a remote code execution primitive at the privilege of that backend.

CVSS

No CVSS.

References

Link	Resource
https://www.enterprisedb.com/docs/security/advisories/cve202650738/

Configurations

No configuration.

History

28 Jul 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-28 19:17

Updated : 2026-07-28 19:17

NVD link : CVE-2026-50738

Mitre link : CVE-2026-50738

CVE.ORG link : CVE-2026-50738

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

{"id": "CVE-2026-50738", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50738", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-07-28T18:44:48.974347Z"}}], "cvssMetricV40": [{"type": "Secondary", "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "affectedData": [{"vendor": "EnterpriseDB", "product": "pglogical", "versions": [{"status": "affected", "version": "2", "lessThan": "2.4.8", "versionType": "semver"}], "defaultStatus": "affected"}]}], "published": "2026-07-28T19:17:36.967", "references": [{"url": "https://www.enterprisedb.com/docs/security/advisories/cve202650738/", "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "20be33e2-bf35-4d13-8fad-18bd2f3e3659", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "A use-after-free condition exists in pglogical's worker signaling code, where a worker structure can be dereferenced after the underlying slot has been freed or recycled during normal worker lifecycle events. The condition is reachable during normal replication operation, including by a low-privileged user able to influence worker start, stop, and restart timing through permitted pglogical operations. In the typical case the condition crashes replication workers, causing an availability impact. In the worst case a use-after-free in a PostgreSQL backend can be leveraged as a remote code execution primitive at the privilege of that backend."}], "lastModified": "2026-07-28T19:17:36.967", "sourceIdentifier": "20be33e2-bf35-4d13-8fad-18bd2f3e3659"}